diff --git a/leetcode/202.py b/leetcode/202.py
index c3b5c9f..7c2c109 100644
--- a/leetcode/202.py
+++ b/leetcode/202.py
@@ -15,5 +15,5 @@ class Solution:
         if str(total) in status:
             return False
 
-        status.apepnd(str(total))
+        status.append(str(total))
         self.isHappy(total, status)